Fine-gold-saving device



July 6 1926.

;M.GARcm FINE GOLD SAVING DEVICE Filed Oct. 26, 1925 Patented Jul fiylgzes l AN Tomo'rnGARcIA; ons'rooxroiv, CALJIEOBNIALQ I 7 rrnn-eonnsevnve DE ICE;

Application filed October as, 7 925. I Serial No. 64,191."

This invention relates to improvements in hydrauliemining apparatus,and'part1cularly to a device for savingfine gold and otherprecious'metals from black sand and similar fine materials. 7 y i v Sandof this kind is found in 'large quantities in various sections of thisState and frequently contains a goodly quantity of free I gold. Someofthis gold is in the form. of particles, of appreciable size, whichmaybe reclaimed from a the sand by ordinary Wash- 7 in'g'jniethods. Byfar the greater :percentp age of the gold in the sand-however is'ini theform offparticles of almost minutesiz'e; which heretofore the operatorshave been unable to segregate from'thesand in acom- .inerciallypracticable and economicalf'man nerl, h i V The principalobject :of myinvention therefore is to provide a device for treating sand ofthi'scharacter' in such a manner that I may save the greater portion, ifnot all, of i the goldin the sand in a cheap, rapid and 'efficientmanner.- The present structure also represents an: improvement over aportion.

of thestructure shown in nay-Patent No.

1,544,272, dated September 2 2nd,-1925."

A further object of, the invention is to produce a simple andinexpensive device and ,yetone which willbe exceedingly effective forthepurpose for which it is designed.

These objects Iaccomplish by means-of;

such structure and relative arrangement of parts as will fully appear byaperusal of the following specification and claims In thedrawingssimilar characters of reference indicate corresponding parts inthe several views; a r I o p F 1g. 1 1s a s1de elevation'of the dev ce.

I QFig. 2'is a sectional elevation of the same.

Referring nowumore particularly to the characters of reference on thedrawings, the

numeral 1 denotes a sluiceway preferably elevated from the groundsomewhat and supported at a suitable height by a trestle-work 2 or thelike; vThis'slui'ce is set at a down-7' ward slant so that water willflow, fr eely fromits upper to its lower end; Associated with thesluiceway at theupper end thereof: is a feed structure (not shown) whichpreferably of the same j character as that "shown in the above mentionedpatent. The

lower endof the sluicewayf discharges into a two-compartment hopper 3,also asshown in said patent.

Aqcertain distance from its upper end. the

upwardly and forwardly to a bottom of. slllie i formed as -a .;I'emovatherethrough; I Beyond the screen thebottom of the sluice has transverserifiles 5 of ordinary character to catch any gold present in the coarsegravel or sand passing down the sluice andof asize incapable of passing"through the screen 4.

Mounted under the sluice and'ha ving water tight connection therewith isa receptacle ble screen 4 having 'amesh of suificientfine V .ness toonly permit ofblack sand passing 6. This receptacle commencesadjacentthe upper end of the screen 4 and extends downwardly'a certaindistance itherebeyond'. The

bottom of the receptacleis preferably paral lel tothe bottom of thesluice andit's lower end is formed as a curved portion slopingthe'bottom of the sluice:

junctionywith 1 Mounted in the receptacle 6 on g 7 disposedjust-under'the'fioor of the sluice beyondf the" screen? 4 are verticallyspaced" screens '8 of; veryffine' mesh which extend from the bottom" endof, the screen '4 to a forthe purposeof enablinganydepositfof goldthereonto "be readily removed j Said screens are preferably;removablefifrom one side of the receptacle "and in order to pre ventunauthorized, removal of the same, the

point adjacent the lower end of the recep tacle. These screensareslidably mounted in 7 place and are removable from the receptaclescreen frames are provided with 'orificed lugs I 9 on their outer facesto cooperate with a means may be attached to thelugs and plate tomaintain the screens'locked a-gainstre- :moval. I 1

A valved dr'ain outlet 11 is provided in the side of the receptacleadjacent the bottom and-lower end-thereof "so" as 'toienable the waterto be 'drawnjoff' when desired.

Thebottom of the sluicej fromthe-lower end of the'sc'reen' 4 to the;lower end-of the" receptaclejis preferably made in the form of r aremovable plateas vshown at 12; This-en ables sand to be shoveledoutfrom the receptacle from above after the screens 8 have collectedthe'gold in thessand and have been removed,

In operation the the upper end of the sluice in conjunction with acertain amount "of water; The coarse 7 material from which the gold isto be extracted, including coarse sand, gravel and black'zsand, is fedonto similarly orificed plate 10 on the'sideofthe receptacle soth'atapadlock'jorother locking i ir oilgh' the screens is" deposmateriel down the sluiee 7 Q the hop- 1yeoa1se gold belm euught by therifiles 51" J I V Am fine black sand, and of course fine part idhes ofgold, ififieimingled thefewith together with some either Water, p essdown thl'ougl'l'the screen 4 into the-reeefia 'ile 6 and 'tend to movepowwd the lower end, thereof. The Water renil and. fiomngovey and pastthe screen 4: indiiees tn outfio from the re cepta e'leat the l ver endbf d "2 ses 2 1o? 'itediiigd l eiufi'eniu ol wyateji to be I Ielsoiinduees n the" oeket A the ater and sand in I ecepfm elef 31 mm dcondition, eansiiig a" .dj a'e llti file upj per sure r if! therieeeptae le and un- Iis fine gold fr 111 I Hi e d,

3 byepeni'n Qthei ojifiletf 11,; end the send 'fihe vi w e .v o r fngsucl demhtkmay h e rtedz ea do A 11 Operation oi xg opera tjons to-bereadily me me; o d is fel t /theflit stilleon; e diema e a. "furt er tet- 'ile I saved, 1s te. .1 15

V8.1" oiithe ik i We produced sueh: 2L

fulfi l? to rth herln.

ted the p (es e 1 \gpice such deyiaitions a d screen; Thisihftui'd" sereen g the ioi'yer v 'i -l it ie ilhal ed; View er 1n the recept ele- 1sthen dm111ed. out:

pgssmo' o titlirough opp b le t is removed' ens 8, and plate s. lie ep em ab qfheeessary be herefspes fimlb .nlent n ds precious met {sheobjects not form a departure frOlllthe. spirit of the im'eg lt ion, as?fined I e] a'Qpended clziims'. I y V o V "Hifi'ing thus described myinvention what I clilh new dild us efiil and desire to Se cure by Lefiters Patent: is; o

- IJAjureious meta saving device Comprising; doyymfizgyl d ly slantingsluiceway, a

'sci'eeii jfbrming ellfiortion of the bottom thereof, a receptacle havmgwate' fight eon neceipn "\i ith' (115p sedjbelow er "the We? disp sed?eine ed il 1 we: he

me; on W 1i the slui P4 e} s ate-sire 211 wie d? pm? 2 125. e.

IM- 1 11 15, wlle se i ny. lsz e u ?e

